OCZ Xmp series or OCZ Flex Ex Series.. both are DDR3 (1600) PC3 12800

i am still in need of some ram. either-
OCZ XMP Ready Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit
http://www.newegg.com/Product/Prod [...] 6820227388
or
OCZ Flex EX Series 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kits
http://www.newegg.com/Product/Prod [...] 6820227408

i read some review about these ram the XMP ready series work very well with my Mother board(ASUS P6T Deluxe LGA 1366) right out of the box but the Flex EX series not much review. perhaps only one at the time i was reading the review... the review about Flex EX is that they are thick and i won't be able to put 6 stick of ram only 3 due to the size of it, is that true?
yes iam planning to get all 12GB ram.but for now only 6GB ram


i really want to get my purchase done by this 03/13/2009.

thank you very much for your help. seriously very much appreciated.

guess iam going to get the xmp right now then

Went w/ the memory from amazon... except I misstyped my house address by 1 digit and UPS decided they couldn't deliver. Because of this, I bought from newegg for $92/(72 after MIR). Seems pretty good so far. I had to fight the urge to buy the Corsair Dominator. In the end, I was able to convince myself the difference in price couldn't be justified.